[enhancement] Local development sandbox

[shapkarin]

Why this matters

Handy tool to up and run and isolated environment for local development.

Purpose

The main purpose is not to simplify setup and execution,
but to create an isolated and secure environment for local development of the MCP Inspector itself.

Solution

• Independent docker compose config compose.local.yaml
• One-way sync only, host to container (good to have)

[shapkarin]

in progress.

1. "Local docker sandbox" diff: main...shapkarin:inspector:chore/local-sandbox
2. "One-way sync only" diff: main...shapkarin:inspector:chore/local-one-way-sandbox